GeForce GTX 460 (OEM) vs GeForce GTX 465

Intro

Compare those specs to the GeForce GTX 465, which features a GPU core clock speed of 607 MHz, and 1024 MB of GDDR5 memory running at 802 MHz through a 256-bit bus. It also features 352 Stream Processors, 44 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 (OEM)		150 Watts
GeForce GTX 465		200 Watts
	Difference: 50 Watts (33%)

Memory Bandwidth

In theory, the GeForce GTX 460 (OEM) should perform a little bit faster than the GeForce GTX 465 overall. (explain)

GeForce GTX 460 (OEM)		108800 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 6208 (6%)

Texel Rate

The GeForce GTX 460 (OEM) is quite a bit (about 36%) more effective at texture filtering than the GeForce GTX 465. (explain)

GeForce GTX 460 (OEM)		36400 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 9692 (36%)

Pixel Rate

The GeForce GTX 460 (OEM) will be a little bit (about 7%) more effective at AA than the GeForce GTX 465, and able to handle higher resolutions while still performing well. (explain)

GeForce GTX 460 (OEM)		20800 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 1376 (7%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of MB per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.